Wrap these with #ifdef BKPT_SUPPORT

src/gba/agbprint.cpp

@@ -56,7 +56,9 @@ void agbPrintFlush()
 
     uint32_t address = (debuggerReadHalfWord(0x9fe20fa) << 16);
     if (address != 0xfd0000 && address != 0x1fd0000) {
+#ifdef BKPT_SUPPORT
         dbgOutput("Did you forget to call AGBPrintInit?\n", 0);
+#endif
         // get rid of the text otherwise we will continue to be called
         debuggerWriteHalfWord(0x9fe20fc, put);
         return;
@@ -66,12 +68,13 @@ void agbPrintFlush()
 
     while (get != put) {
         char c = data[get++];
+#ifdef BKPT_SUPPORT
         char s[2];
         s[0] = c;
         s[1] = 0;
-
         if (systemVerbose & VERBOSE_AGBPRINT)
             dbgOutput(s, 0);
+#endif
         if (c == '\n')
             break;
     }

src/libretro/libretro.cpp

@@ -87,8 +87,10 @@ int systemFrameSkip = 0;
 int systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
 int emulating = 0;
 
+#ifdef BKPT_SUPPORT
 void (*dbgOutput)(const char* s, uint32_t addr);
 void (*dbgSignal)(int sig, int number);
+#endif
 
 // Dummy vars/funcs for serial io emulation without LINK communication related stuff
 #ifndef NO_LINK